How to read the band →
Solid line = floor (spellings that unambiguously belong to the group). Shaded band up to the dashed edge = ceiling (the most it could reach if every ambiguous spelling counted here).
Andrea
Andrea is now well below its former popularity. All-time it's been given to 460,441 U.S. babies, the 459th most common name by sound today, peaking at 12,133 in 1981, with 1,344 in 2025.
By sound, Andrea also includes the spellings Andria.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).